GPT-5.4 Nano vs Gemini 2.5 Flash Preview (09-2025)
Side-by-side comparison of pricing and capabilities
GPT-5.4 Nano
Gemini 2.5 Flash Preview (09-2025)
Input Price Comparison
| Attribute | GPT-5.4 Nano | Gemini 2.5 Flash Preview (09-2025) |
|---|---|---|
| Provider | OpenAI | |
| Input Price | $0.2 /1M tokens | $0.3 /1M tokens |
| Output Price | $1.25 /1M tokens | $2.5 /1M tokens |
| Cached Input | $0.020 /1M tokens | $0.030 /1M tokens |
| Context Window | 272K | 1.0M |
| Type | chat | chat |
| Status | current | preview |
Capability Comparison
| Capability | GPT-5.4 Nano | Gemini 2.5 Flash Preview (09-2025) |
|---|---|---|
| multilingual | ||
| coding | ||
| vision |
Which should you choose?
Budget-conscious: GPT-5.4 Nano is 33% cheaper on input tokens ($0.2 vs $0.3 per 1M tokens).
Context-heavy tasks: Gemini 2.5 Flash Preview (09-2025) offers a larger context window (1.0M vs 272K), making it better for long documents or conversations.
Capability fit: GPT-5.4 Nano supports 1 capabilities (multilingual), while Gemini 2.5 Flash Preview (09-2025) supports 3 (coding, vision, multilingual).
Frequently Asked Questions
Which is cheaper: GPT-5.4 Nano or Gemini 2.5 Flash Preview (09-2025)?
GPT-5.4 Nano costs $0.2/1M input vs Gemini 2.5 Flash Preview (09-2025) at $0.3/1M input. GPT-5.4 Nano is 33% cheaper on input tokens.
How do output prices compare between GPT-5.4 Nano and Gemini 2.5 Flash Preview (09-2025)?
GPT-5.4 Nano output: $1.25/1M, Gemini 2.5 Flash Preview (09-2025) output: $2.5/1M. GPT-5.4 Nano is more economical for generation-heavy workloads.
What is GPT-5.4 Nano best used for?
GPT-5.4 Nano is best for budget-conscious applications, high-volume chatbots, and tasks where cost efficiency is the primary concern.
What is Gemini 2.5 Flash Preview (09-2025) best used for?
Gemini 2.5 Flash Preview (09-2025) is suited for complex reasoning, analysis, and tasks that benefit from its coding and vision capabilities.